Pfaff hobbylock 4752 Owner's manual

hobbylock

4752

Instruction Manual

Parts of the hobbylock 4752

Right needle thread tension

(green)

Telescoping thread guide

Thread guides

Thread spool pin

Cone thread

adapter

Thread spool stand

Setting knob for

stitch length

Foot control plug

with power

cord

Foot control plug

with power

cord

Electrical power

master switch

Handwheel

Setting screw for presser

foot pressure

Left needle thread tension

(blue)

Swivel plate

Looper cover

Upper looper

thread tension (red)

Lower looper

thread tension (yellow)

2

3

Simple, up-to-date sewing

Congratulations! You have bought a high-quality

product that provides unique advantages. Your new

hobbylock 4752 can take any material in its stride

and will sew through thick and thin for you.

Your PFAFF hobbylock features the very latest in de-

sign and technology, and it is just as simple to ope-

rate as this instruction manual is to follow.

Before you start sewing, please take the time to read

these instructions carefully. It is certainly time well

spent, and is the best way to find out just what your

machine can do and make full use of all its features.

If you have any further questions, just ask your aut-

horized PFAFF dealer. Your dealer is happy to be of

service with any help or advice.

Let’s get started! We wish you many enjoyable hours

creating your very own fashions and projects!

4

Contents

Page

Accessories . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

Accessories, optional . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37

Accessory box. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

Changing a spool on a threaded machine . . . . . . . . . . . . . . . . 11

Cleaning the machine. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38

Cone thread adapter. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

Connecting the machine . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

Differential feed . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

Electrical power master switch . . . . . . . . . . . . . . . . . . . . . . . . . 7

Foot control. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7, 8

Handwheel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

Light bulb (sewing lamp), changing . . . . . . . . . . . . . . . . . . . . . 41

Looper cover . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

Lubricating the machine . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39

Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38 - 41

Needle holder . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22

Needle plate, removing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38

Needle position. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23

Needle, changing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22

Oiling the machine . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39

Presser foot . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9, 21

Presser foot lifter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

Presser foot pressure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21

Presser foot, changing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21

Program overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30, 31

Safety notes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2, 7

Seam guidelines . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26

Seam width setting knob . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

5

Seam width, setting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

Securing the seam . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27, 28

Sewing. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26

Sewing light cover . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41

Sewing problems and their solutions. . . . . . . . . . . . . . . . . . . . 42, 43

Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44

Stitch formation correction measures . . . . . . . . . . . . . . . . . . . 32 - 36

Stitch length setting knob . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

Stitch length, setting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

Stitch width latch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25

Swivel plate. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

Telescoping thread guide. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

Thread chain cutter. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26

Thread net . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

Thread tensions, setting. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29

Thread unreeling disc. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

Threading aid for looper thread . . . . . . . . . . . . . . . . . . . . . . . . 13, 15

Threading aid for needle thread . . . . . . . . . . . . . . . . . . . . . . . . 16, 18

Threading paths/overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0

Threading the lower overedge looper (yellow) . . . . . . . . . . . . 14, 15

Threading the machine . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

Threading the needle(s) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16, 17, 18

Threading the upper overedge looper (red). . . . . . . . . . . . . . . 12, 13

Threading, important note. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

Threads and needles chart. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29

Upper blade, changing. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40

Upper blade, disengaging . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24

Waste container . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

6

Attaching the waste container

Guide the lug into the groove on the looper

cover.

Storing the accessory box

Place the accessory box in the waste con-

tainer.

Accessories

screw driver tweezers

thread nets

needle

system

thread unreeling discs

wrench

looper threading aid

cleaning

brush

needle threading

aid

machine

oil

re-

place-

ment

upper

blade

lug

waste

container

looper cover

groove

accessory box

waste

container

7

wall socket

lead cord/plug

connection socket

foot control plug

foot control

main switch

Connecting the machine to the mains power supply

Switch the main switch to OFF.

Plug the foot control plug into the connection socket on the machine.

Plug the lead cord/plug into the wall socket.

Switch the main switch to ON.

Notes on safety

This appliance has a polarized plug (one blade wider than the other).

To reduce the risk of electric shock, it is designed to fit into a polarized outlet only one

way. If the plug does not fit correctly into the outlet, reverse the plug. If it still does not

fit, contact a qualified electrician to install the proper outlet.

Do not modify the plug in any way.

Foot controller type YC-482J (120 V)/YC-550 (230 V)/YC-551 (240 V) has to be used with

this overlock machine.

For the USA and Canada

This sewing machine has a polarized plug (one blade wider than the other). To reduce

the risk of electric shock, this plug is intended to fit in a polarized outlet only one way.

If the plug does not fit fully in the outlet, reverse the plug. If it still does not fit, contact

a qualified electrician to install the proper outlet. Do not modify the plug in any way.

8

Sewing speed

The sewing speed is regulated by activating

the foot control. The further you press the

foot control down, the faster the machine

will sew.

Direction of rotation of the handwheel

Always turn the handwheel towards you, as

shown in the illustration (i.e. counterclock-

wise).

Opening and closing the looper cover

Opening: Push the looper cover fully to the

right and then swivel it down.

Closing: raise the looper cover and press

it towards the machine. The looper cover

snaps into place automatically.

Opening and closing the swivel plate

Opening: press the swivel plate towards the

left.

Closing: press the swivel plate towards the

right and slightly towards the machine.

Safety note: the swivel plate and the loo-

per cover must always be closed when the

machine is used.

foot control

handwheel

swivel plate

looper cover

9

Telescoping thread guide

Pull the telescoping thread guide upward to

its highest position.

The two upper telescopes must be rotated

slowly until their locking balls are heard to

lock into place.

Attaching the thread unreeling discs and the

thread nets

Pull the cone thread adapter off the spool

pin when using a small spool. Place the

spool on the spool pin in such a way that the

slit is at the top and place the thread unreel-

ing disc on top of the spool.

If the thread jumps off the spool during

threading or sewing or if it slips out of the

thread tensioners when sewing rolled hems,

pull the enclosed net over the spool, as

shown in the illustration. In this way, you

can prevent the thread from jamming.

Presser foot lifter

The presser foot can be raised and lowered

using the presser foot lifter.

The presser foot must always be lowered

when the machine is used.

presser foot

lifter

cone thread

adapter

thread unreeling discs

slit

thread net

spool

standard

presser foot

stops

spool pin

thread

guides

telescoping

thread guide

10

left needle

thread

guide

plate

right needle

thread

upper looper

thread

guides

lower looper

thread

Threading the machine

11

Before the machine leaves the factory,

threads are already threaded and their ends

are cut off. Tie one of these thread ends to

the thread from a spool with an overhand

knot, raise the presser foot and pull the new

threads through the loopers. In order to

thread the needle threads, pull the thread

ends through until the knots reach the

needle eye. Cut the threads on both sides

of the knots. Rethread the eye of the needle

with the needle threading aid (see Pages 16,

18). With this procedure, you can save a

great deal of time when threading.

If the threads are not threaded in the machi-

ne, thread the upper looper thread (red) first,

then the lower looper thread (yellow), the

left needle thread (blue) and finally the right

needle thread (green). Two threading dia-

grams are located behind the looper cover

to help you correctly thread the machine.

Threads that are threaded incorrectly will

lead to irregular (skipped) stitches, broken

needles and uneven thread tension. There-

fore always make sure that all the threads

are perfectly threaded before beginning to

sew.

In order to replace spools, cut the threads

between the thread guides and the thread

guide plate. Thread the new threads in the

manner described opposite.

In order to make threading easier, set the

thread tension to “0”. After threading, reset

the thread tension to the desired number

(see Pages 30, 31).

12

Threading the upper looper (red)

Open the looper cover and the swivel plate.

Place the spool on the second spool pin

from the right. The guide points for the up-

per looper thread are marked in red. Two

threading diagrams are located behind the

looper cover to help you with the threading.

Guide the thread from the rear through the

second thread guide from the right.

Guide the thread through the fourth and the

third hole from the right on the thread guide

plate, as shown in the illustration.

Guide the thread from the right to the left

into the left guide (3).

guide plate

guide (3) for

the upper

looper

thread

thread guides

13

Guide the thread through from the right bet-

ween the tension discs and pull the thread

tight from both sides.

Feed the thread into the guide (5) for the up-

per looper thread.

Feed the thread into the guide (6) for the up-

per looper thread. Guide the thread into the

take-up lever (7) of the upper looper thread.

Feed the thread into the guide (8) of the up-

per looper. Feed the looper threading aid

through the eye in the upper looper. Then

hook the thread end into the looper thread-

ing aid and pull the latter with the thread

through the eye. Remove the thread from

the looper threading aid and pull on the free

thread end until at least 10 cm (4”) is

showing beyond the eye. Lay the thread to

the left under the presser foot. Close the

swivel plate and the looper cover.

guide (5) for

the upper

looper thread

guide (6) for

the upper

looper thread

take-up lever

(7) of the

upper looper

thread

looper

threading

aid

upper

looper

guide (8) for

the upper

looper

thread tensioner of

the upper looper

thread

14

Guide the thread from the rear through the

right thread guide (1).

Guide the thread through both the right

holes on the thread guide plate (2), as shown

in the illustration.

Guide the thread from the left to the right

into the right guide (3).

Threading the lower looper (yellow)

Open the looper cover and the swivel plate.

Place the spool on the second spool pin. The

guide points for the lower looper thread are

marked in yellow. Two threading diagrams

are located behind the looper cover to help

you with the threading.

guide plate (2)

guide (3) for

the lower

looper

thread

thread guide (1)

15

Turn the handwheel towards you (counter-

clockwise), until the looper is on the extreme

right. Feed the looper threading aid through

the eye of the guide (10) for the lower

looper. Then hook the thread end into the

looper threading aid and pull the latter with

the thread through the eye of the guide (10).

Guide the thread through from the right bet-

ween the tension discs and pull the thread

tight from both sides.

Feed the thread into the guide (5) for the

lower looper thread.

Remove the thread from the looper thread-

ing aid and using the tweezers pull on the

free thread end until at least 10 cm (4”) is

showing beyond the eye of the lower looper.

Lay the thread to the left under the presser

foot. Close the swivel plate and the looper

cover.

Feed the thread into the guide (6) for the lo-

wer looper thread.

Guide the thread into the take-up lever (7) of

the lower looper thread.

Feed the thread into the guide (8) for the

lower looper thread.

Feed the thread into the guide (9) for the

lower looper thread.

lower looper

looper threading

aid

looper threading

aid

thread

guide (10)

for the lower

looper thread

guide (9) for

the lower

looper thread

guide (6) for the

lower looper thread

guide (8) for the lower

looper thread

take-up lever (7) of the

lower looper thread

looper

threading

aid

tweezers

guide (5) for

the lower

looper thread

thread tensioner of

the lower looper

thread

Führung

des Nadel-

fadens

Faden-

führung

der

Nadel-

stange

16

Guide the thread from the right between

the tension discs and pull the thread tight

from both sides. Raise the needle(s) to the

high-est position by turning the handwheel

towards you. Guide the thread into the take-

up lever (4). Feed the thread from the right

to the left into the left guide (5) for the

needle thread.

Feed the thread from the left to the right

into the thread guide (6). Feed the needle

threading aid through the needle eye from

the rear. Then hook the thread end into the

needle threading aid and pull the needle

threading aid with the thread through the

needle eye. Pull on the free thread end until

at least 10 cm (4”) is showing beyond the

needle eye. Lay the thread to the left under

the presser foot.

thread ten-

sion (3) of

the left

needle

thread

cover of the

take-up lever

(4)

Threading the left needle (blue)

Place the spool on the left spool pin. The

guide points for the left needle thread are

marked in blue. Two threading diagrams are

located behind the looper cover to help you

with the threading.

Guide the thread from the rear through the

left thread guide (1) and both the left holes

on the thread guide plate (2).

guide (5) for the

needle thread

thread guid

(6) on the

needle bar

17

cover of the take-up

lever (5)

guide for the

right needle

thread (4)

thread tension

(3) of the right

needle thread

Raise the needle(s) to the highest position

by turning the handwheel towards you.

Guide the thread through the guide (4) for

the right needle thread and through the

take-up lever (5)

Guide the thread from the right between the

tension discs and pull the thread tight from

both sides.

Threading the right needle (green)

Place the spool on the second spool pin

from the left. The guide points for the right

needle thread are marked in green. Two

threading diagrams are located behind the

looper cover to help you with the threading.

Guide the thread from the rear through the

second thread guide (1) from the left. Guide

the thread through the fourth and the third

hole from the left on the thread guide plate

(2).

18

Feed the thread from the left to the right into

the right guide (6) for the needle thread.

Feed the thread from the left to the right into

the thread guide (7).

Feed the needle threading aid through the

needle eye from the rear. Then hook the th-

read end into the needle threading aid and

pull the needle threading aid with the thread

through the needle eye. Pull on the free

thread end until at least 10 cm (4”) is

showing beyond the needle eye. Lay the th-

read to the left under the presser foot.

Important note on threading

The needle(s) must always be threaded last

so that the needle threads do not run under

the looper thread as seen in drawing 1, but

instead over the looper thread as depicted

in drawing 2. Should this sequence not be

followed, thread breakage or skipped

stitches can occur.

If the looper threads break, you must pull

the needle threads out of the needle eye,

rethread the looper thread and then

rethread the needle threads.

guide (6 for the

needle thread

thread guide (7)

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Pfaff hobbylock 4752 Owner's manual

Pfaff hobbylock 4752 Owner's manual

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